Authkey

Authkey is for businesses and developers who need to send customer messages, automate communications, or add messaging to their own applications. Its dashboard and APIs bring SMS, WhatsApp, voice calls, and email together, so teams can send campaigns and customer updates or deliver one-time passwords and other verification messages. Messages can be sent across channels in parallel or configured to use another channel as a fallback. Create message templates with dynamic content and group templates into events that can be triggered with a single API request. For SMS in regions that require it, the platform supports approved DLT templates. Developers can integrate Authkey using REST APIs and documentation, while businesses can manage WhatsApp conversations through a shared inbox and automate replies and workflows with AI chatbots. Authkey may suit teams building transactional notifications, OTP verification, marketing campaigns, or automated customer support across multiple channels. It is a communications platform rather than a general-purpose chat app.

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